Lincoln Electric IM930 RED-D-ARC GX300 - Manual (Page 32)

GX 300
E-4 TROUBLESHOOTING E-4
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
No welding power output.
Welder has output but no control.
Wire feeder does not work when
control cable is connected to 14 pin
Amphenol.
No auxiliary power.
1. Poor work lead connection to
work. Make sure work clamp is
tightly connected to clean base
metal.
2. "Weld Terminals" switch in wrong
position. Place switch in "Weld
Terminals On" position when
welding without control cable.
3. Faulty PC board or welder alterna-
tor.
1. Poor remote/control cable connec-
tion to 3 pin or 14 pin Amphenol
connector. Check connections.
2. Faulty remote cable or faulty wire
feeder or wire feeder cable.
Replace if necessary.
3. Faulty control potentiometer or PC
board.
1. Wire Feeder Power circuit breaker
open. Check 42V and 120V
beakers and reset if tripped.
2. Faulty control cable. Repair or
replace cable.
3. Faulty wire feeder.
1. GFCI Receptacle may have
tripped. Follow “GFCI
Receptacle Testing and
Resetting Procedure” in the
MAINTENANCE section of this
manual.
2. Open circuit breakers. Reset
breakers. If breakers keep trip-
ping, reduce power draw.
3. Faulty connections to auxiliary
receptacles. Check connections.
4. GFCI tripped (if installed). Clear
any ground fault and reset GFCI
circuit by pressing "Reset" button
on the 120 V receptacle.
5. Faulty PC board or welder alter-
nator.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Authorized
Field Service Facility.